The difference of the present ages of two sister in 5 yrsAfter 4yrs if the product of their age becomes 104. fine
their present age-​

Answers

Answer 1
Answer:

Answer:

4 and 9

Step-by-step explanation:

let their ages be x and x - 5, then in 4 years their ages will be

x + 4 and x - 5 + 4 = x - 1 , and the product is 104, thus

(x + 4)(x - 1) = 104 ← expand factors on left using FOIL

x² + 3x - 4 = 104 ( subtract 104 from both sides )

x² + 3x - 108 = 0 ← in standard form

(x + 12)(x - 9) = 0 ← in factored form

Equate each factor to zero and solve for x

x + 12 = 0 ⇒ x = - 12

x - 9 = 0 ⇒ x = 9

However, x > 0 ⇒ x = 9

Thus

Their present ages are 9 and 9 - 5 = 4


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Nannette has an 8-foot-long board. She needs to cut it into 9 equal length parts. How many feet long should each sectiob of the board be?

Answers

8/9 of a foot long each section or 10 2/3 inches each section

Josie bought 750 bags of peanuts for $375 he intends to sell each bag for $.15 more than you paid how much should he charge for each bag

Answers

Step-by-step explanation:

Jose bought 750 bags for $375.00

Each bag cost $375/750= $0.50

He  intends to sells them for $0.15 more

He should charge : $0.5 +$0.15=$0.65

What is the image of (1, -6) for a 270° counterclockwise rotation about the origin?

Answers

Answer:

6,1

Step-by-step explanation:

What is the area of this figure? Please help

Answers

Answer:

Step-by-step explanation:

The square has 4 sides with length 4

The right triangle has the right side equal to 4yd + 4yd(from the square) = 8yd

Using the Pythagorean Theorem, we find that the left side of the triangle has length = 10yd

The area of the whole thing is the area of the square + the area of the triangle

The formula for the area of a square with sides l is A_s = l^2

The area of the triangle is trickier, but you can imagine tracing a line in the left side and the upper side to form a rectangle, and the area of that is A = l * L, the area of the triangle will be half the area of the rectangle so it'll be A = (6 * 8)/(2) = 24 (yd)^(2)

The total area will be;

Area of the square + Area of the triangle = 16 + 24 = 40 yd^(2)

Arrow is launched upward at 256 feet per second from top of 85 foot building. What is maximum height of arrow?

Answers

As arrow rises to its maximum height, its velocity decreases from 256 ft/s to 0 ft/s at the rate of 32 ft/s each second. Use the following equation to determine the distance it rises.

vf^2 = vi^2 + 2 * a * d, vf = 0, a = -32
0 = 256^2 + 2 * -32 * d
64 * d = 65,536
d = 65,536 ÷ 64 = 1024 ft
Maximum height = 85 + 1024 = 1109 ft

The arrow's maximum height above the ground can be calculated using maximum height. The maximum height reached from the launch point is 1024 feet. Adding the height of the building, the overall maximum height of the arrow is 1,109 feet.

To find the maximum height of the arrow, you can use the following formula:

Maximum Height = Initial Height + (InitialVelocity^2 / (2 * Acceleration due to gravity))

In this case:

Initial Height = 85 feet

Initial Velocity = 256 feet per second

Acceleration due to gravity (approximated as 32 feet per second squared)

Maximum Height = 85 + (256^2 / (2 * 32))

Maximum Height = 85 + (65536 / 64)

Maximum Height = 85 + 1024

Maximum Height = 1109 feet

So, the maximum height the arrow reaches above the ground is 1,109 feet.

Learn more about Maximum Height here:

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What is the image of 2,-1 after a reflection over the y axis

Answers

The image of the point after a reflection over the y-axis is (-2, -1)

Calculating the image of the point after a reflection over the y-axis?

From the question, we have the following parameters that can be used in our computation:

Point = (2, -1)

Transformation rule

A reflection over the y-axis

The rule of a reflection over the y-axis is

(x, y) = (-x, y)

Using the above as a guide, we have the following:

Image = (-2, -1)

Hence the image of the point after a reflection over the y-axis is (-2, -1)

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There are no images included, but it would be -2,-1.